Printing-press.



PATENTED AUG. 1, 1905.

f J. J. RAPTER.

PRINTING PRESS. APPLICATION FILED APE 4 1904 z SHEETS-SHEET 1.

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No. 795,858. PATENTED AUG. l, 1905. J.-J. RAFTER.

PRINTING PRESS.

APPLICATION FILED APR.4.1904.

2 SHEETS-SHEET 2.

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UNITED STATES ,PATENT oEEIoE.

JOSEPH J. RAFTER, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE RAFTERTVO-COLOR ROLLER COMPANY, OF BOSTON, MASSACHU- SETTS, A CORPORATION OFMASSACHUSETTS. I

PRINTING-PRESS.

Specification of Letters Patent.

Patented Aug. 1, 1905.

Application filed April 4, 1904. Serial No. 201,366.

It is frequently` desirable to have a print-l ing-press so constructedthat it may be readily equipped for multicolor-work, and that withoutcomplete disorganization or substitution of many parts, and when it isdesirable to again use the press for one-color work to beable to do sowithout throwing into idleness parts of the mechanism. In one form ofcarrying out my invention the same may be applied to aroller-presswherein th'e ink is applied to the distribution-table havinga reciprocatory movement, and having resting upon it a set ofink-distributing rolls, and intermittently resting upon it a set ofform-inking rolls, it of course being well understood by those skilledin the art that the table or inkplate moves in unison with the form andthat the form and table will alternately engage with the form-rolls,whereby ink will be supplied as occasion may demand. To get the bestresults in color-work wherein the matter for one color will be set up onone side of the form and the matter for the other color set up on theother side of the form to apply ink of the respective colors to therespective sides of the plate and for preventing their spreading andblending upon the rolls, a channel may be provided in the table and achannel or groove may also be provided in a corresponding portion of oneof the rolls, preferably the vibrating roll. This system may be carriedout in the set of ink-distributing rolls and in the set of form-rolls.When itis desired to use the press for one-color work, a closely-fittingmember may be inserted into the plate and closely-fitted members beinserted into the grooves or channels upon the rollers. AThese memberswill of course be normally constituted for disassemblage from when intheir assembled position make the parts substantially normal--tliat is,so they will perform their function the same as if they did not carrythe members constituted for disassemblage, but were solid inconstruction. The separation of the colors may be further increased bythe fountain-roll having a groove in which a scraper may be run to keepa clean division between the colors at the fountain. In some presses andfor some kinds of work the ,ink-plate may be of solid formation and inothers the grooved fountain-roll and the scraper will give suflcientseparation of eolors to prevent blending.

In the drawings accompanying and forming a part of this specification aform of my invention is illustrated, wherein-- Figure l is a plan viewof an embodiment of my invention wherein a set of rolls, eitherform-rolls or distributing-rolls, are mounted upon a plate. Fig. 2 is afront view thereof, the plate being shown in cross-section. Fig. 3 is aside view thereof. Fig. 4 is a perspective of a portion of the plate,showing the channel therein open. Fig. 5 is a perspective of a memberfor filling such channel. Fig. 6 is a side View, partly broken away, inthe form of roller for use in the press, the collar being removed toreveal the channel. Fig. 7 is a side view of a roll carrying a collar,the roll there being in the form for solid-color work. Fig. 8 is a formof collar which may be used. Fig. 9 is a side view of the centralportion of a roll wherein the collar-neck is solid with the rollportions. Fig. l() is a crosssection of such roll through the region ofthe screw-holes and a cross-section of a separable collar disassembledfrom the roll. Fig. 11 is a perspective view of a fountain, one endbeing removed, and the end of the distribution-- table. Fig. l2 is acentral cross-section of a fountain and fountain-roll and side View of ascraper. Fig. 13 shows a section of a roll having a collar to giveacircumferential groove to the roll. Fig. 14 shows the same having acollar to give the rollan even uninterrupted surface, and Fig. 15 is asection of a roll having a groove directly in its circumference.

Like characters of reference refer to similar parts in the variousviews.

The distribution-table (designated in a general way by 11) is hereinillustrated for the purpose of convenience in describing the in-lvention and is shown as having a channel 12 parallel with the line ofmovement of such distribution-table relative to the rolls.V The channelin the present instance is shown as undercut and adapted to receive amember (designated in a general way by 13) which is in the presentinstance adapted to dovetail with such undercut channel, and theink-receiving face 14 of such member will when the parts are assembledbe substantially flush with the face 15 of the table. This channel willprevent the intermingling of the'ink from the respective sides thereoflwhen two-color Work is being run on the press and will prevent the inkfrom the respective portions of the rolls Working toward each other andblending. Other means of producing and closing the channel may beresorted to as the eXigencies of particular employments may demand.

The table in the present instance is shown as resting upon tracks 16,whereon it may be moved in any suitable or well-known manner. Themembers embodying the tracks have side portions 17, affording bearingsfor the spindles 18 of the rolls. According to the present illustrationrolls which according to the present general practice of printing willbe composition rolls are designated in a general Way by 19 and are shownas having contact with the surface of the table. Such rolls areuninterrupted from end to end in the present illustration, although inpractice it may be found expedient to employ a roll having a groove atthe region of the groove in the plate. The upper rolls, or the rolls outof contact with the table, are designated in a general way by 20, andaccording to the present system of organizing printing-presses suchrolls are made of metal, either iron or steel, and carry at the ends ofthe spindles collars 21, which collars are engaged by a pin 22, dependedfrom a lever 23, carried by a rod 24, oscillated in some suitablemanner, which lever causes the rolls 20 to reciprocate back and forthacross the surface of the other rolls described, whereby the ink isdistributed upon the perimeters of such rolls and the distribution iscaused upon the distributing-table in the case of the rolls for thedistribution of ink, and an even distribution of the ink upon theform-inking roll is had. Cog-Wheels (indicated by dotted lines may beemployed for rotating the metal rolls, which by contact with thecomposition rolls will cause their movement. Generally the compositionrolls, or whatever rolls happen to be in contact with the table, willhave the same surface speed as such table during the relative movementof therollsand table. The metal rolls are shown as divided intosections, and one of such sections is removable, whereby a space may beprovided mating with the space formed by the removal of the member fromthe table. In certain lines of work good results may be accomplished byeither using the channeled table or by using the grooved rolls; but incases where considerable work is to be done it will render the operationmore simple and insure greater freedom from liability of blending ofcolors to have the rolls and table provided with channels.

The rolls may be provided for the production of the channels withreadily-removable collars, (designated in a general way by 26.) In Fig.6 a roll is shown wherein the roll perimeter is divided into two rolls27 and 28 and a neck 29 of smaller diameter, which neck has ascrew-threaded stem 30 protruding therefrom, which stem will take into asuitable screw-thread in the other portion of the roll, and the two maybe securely united. When it is desired to change from a continuous to adivided roll or the reverse, it is simply necessary to unscrew themembers and remove or insert the collar, as th'e case may be. In Fig. 9a form of roll is shown wherein the neck 29 is fast upon both of thesections 27 and 28, which neck is adapted to receivea divided collar,the halves 31 and 32 of which are seen in Fig. 10, which halves maycarry screws 34, adapted for insertion into screwholes 33 in the neck,although other means of securement may be used in practice.

The several colored inks may all be taken from the same fountain by afountain-roller having its ink-receiving faces for the several colorsseparated, and in Fig. 11 the distribution-table is supplied by ink by acontact-roll 35, supported on rock-arms 36, actuated by some suitablemechanism and adapted to take the inks from the fountain-roll 37 andconvey them to the plate for distribution by the distributing-rolls. Thefountain-roll has a spindle 38, carried by the ends 39 of the fountain.The bottom of the fountain is shown as the plate or scraper 40, bearingon the fountain-roll and carried by trunnions 41, carried by the ends39. The pressure of the plate on the roll may be regulated by set-screws42, impinging on an extension of the scraper. The parts may of course bedifferently arranged in other forms of press. Th e ink is shown appliedto the plate and the colors are designated in a general Way by the tints43 and 44, respectively, a clean divisional space 45 separating them.The fountain-roll may be provided with a circumferential groove 46,(shown in the present instance as V-shaped, in which the nose of ascraper 47 will rest. rIhe scraper 47 may be ad justably carried by thescraper-plate 40. Screws 48 entering the latter and traversing a slot inthe former Will provide a convenient means to so adjust and secure thescraper relatively to the roll. The scraper may have faces 49 on itsupper side to direct the ink which it has removed away from the grooveand onto the portion of the roll carrying the ink. The ink (designatedin a general way by 50) will be scraped from the roll in a Wellknownmanner and there will be as many separated faces as there are colors.The grooves may be directly turned. into the roll, as seen in Fig. 15,or may be put upon a split collar .c print two-color work the channelswill be opened in the table and in the rolls and the groove-scraperapplied, so that the colors will be maintained separate and isolated,whereby good results may be obtained upon the press.

The form of press adopted in the present drawings is merely for thepurpose of illustration, and it will be obvious to those skilled in theart that my invention may be used upon other and different presseswithout departing from the spirit and scope thereof.

Vlrhat I claim, and desire to secure by Letters Patent, is-

l. A roll for a printing-press comprising end portions, a neck unitingthe same, and a removable collar carried by such neck, the end portionsand collar constituting a continuous roll.

2. A roll for a printing-press comprising two roll-sections, a neckcarried by one of them, and screw-threaded means to fasten the neck tothe other of them and a collar carried by such neck.

3. A roll fora printing-press having two roll-sections, a neck unitingthe same, and a split collar vcarried by such neck and having ltsperimeter coincident with the perimeters n of the roll-sections.

4. A roll for a printing-press having two roll-sections, a neck unitingthe same, a split collar carried by such neck and having its perimetercoincident with the perimeters of the roll-sections, and means to fastensuch collar to the neck.

5. In a printing-press, the combination with a distribution-plate, of apair of rolls running thereon; a pair of vibrator-rolls in engagementwith such rolls respectively, and portions of the vibrator-roll surfacenormally constituted for disassemblage therefrom.

6. In a printing-press, the combination with a distribution-plate, of apair of rolls running thereon; a pair of vibrator-rolls in engagementwith such rolls' respectively, and portions of the vibrator-roll surfacenormally constituted for disassemblage therefrom, and part of thesurface of the table normally constituted for disassemblage therefrom.

7. In a printing-press, the combination with an ink-distributing table,of a system of rolls in engagement with each other and one of which isadapted to run upon such table, a channel in one of such rolls, afountain having asystem of rolls, a channel in one of such rolls, and ascraper to maintain such channel free from ink and divert the surplusink to the immediate supply therefor.

8. A fountain-roll for aprinting-press comprising a cylindrical bodyhaving a neck intermediate its ends, and a set of interchangeablecollars for such neck, the perimeters of the respective collars havingdissimilar formation.

9. In a printing-press the combination with a distribution-table, of anink-roll adapteolto have surface engagement therewith, a fountain havinga plurality of compartments, a fountain-roll to receive ink therefromand in surface engagement with said former roll and having a portion ofits perimeter out of engagement with said roll, and means to remove theink from such portion and return it to the respective compartments ofthe fountain.

10. In a printing-press the combination with a distribution-table, of afountain having a number of compartments each adapted to contain aseparate ink, a fountain-roll to receive ink therefrom and havingchannels about its perimeter, and means to remove the ink from suchchannels and to direct the removed ink toward the portion of the rollrunning in the fountain supplied with such ink.

JOSEPH J. RAFTER. l/Vitnesses:

IsAAo F. PAUL, JOHN J. COOKE.

